Steering arrangement for motor-driven boats



Nov. 6 1923.

K. LENCK STEERING ARRANGEMENT FOR MOTOR DRIVEN Bums Filed Dec. 10 1914 like and a Patented Nov. 6, 1923.

KARL enoir, or BERLIN, GERMANY.

AT' E STEERING AERBANGEMENT FOB MOTOR-DRIVES BOATS.

Application filed December 10, 1914. Serial F0, 876,587.

To all whom it may concern:

Be it known that I, KARL LENCK, civil engineer, a subject of the German Emperor, and resident of 192-193 Friedrichstrasse, Berlin, W. 8, Germany, have invented certain new and pseful Im rovements in Steering Arrangements for otor-Driven Boats, of which the following is a specification.

The present invention relates to a steering arrangement for motor-driven boats. in which, as shown, for example, by the German specification 155,847, the propeller casing is revolubl'y fitted on a vertical shaft in known manner. By swinging the propeller casing on this shaft the propeller, ma be set either straight, obliquely or reverse y. to thedirection the boats is travelling, so that the boat may be steered straight ahead, to one side or may be reversed. The propeller casin may also be continuously revolved, so that file boat is practically driven both forward and a'sternat the same time, and thus will remain stationary, although motor and propeller continue to run. I

It is known that by the torque which is imparted to the propeller in the water the propeller casing will revolve by itself in the same sense in which the propeller is driven. Therefore, for effecting the setting of the propeller casing in the desiredoblique, astern or ahead position it is o'nly necessary to. stop the propeller casing in known manner in its rotation at such moment when it is in just the desired position. As during such continuous rotation of the propeller casingthe flexible tube which connectsthe pump, fitted to the propeller casing, thus revolving therewith, with the motor cylinder which does not participate in the rotation, will wind around the propeller tube and, eventually prevent a further rotation, it has been tried to turn the propeller casing for steering aside,*ahead or astern by positively gearing it b means of bevel gears and the and-wheel, whereby the propeller casing is turned through an angle of the left.

360 degrees to the right and back again to Y The steering arrangementshitherto known have all thedisadvantage', that they call for a special construction of the whole motor. The bearings containing the reversing levers and gears are partly cast in one piece with the motor cylinder, partly they require separate casings and the like,

locki which again affect the construction of the motor. Above all the efficiency of such complicated steering arrangements is very unreliable because the bearings and casings are easily displaced or turned by the sudden blow-like vibrations caused in steering, and

consequently cause the moving parts to hitch.

According to the present invention these disadvantages are avoided in a strikinglysimple manner 1 by, the known .clampmg sleeve carrying the pro er tube not be ing rigidly but rotatab y attached-- to the tiller. At the same time the tiller contains itself' the .various levers, slides, gears and the like required'for moving or retaining thepro'peller casing, so that thehereinbefore mentioned I hitching of the moving arts can no more occur, as the tiller itself takes up'th'e blow produced in reversing. The newsteering arrangement aifords the further advantage thatit may be instant] fittedto any known outboard motor whic has no reversin gear, by simply removing the existin til er, rigidly connected to the clamping s eeve and substitutin in its place the new tiller, containing t e revoluble clamping sleeve besides the operating and g devices: The present invention also avoids the ump tube winding itself around the propel er tube. byrfitting a water-dis tributor to the pump, the inner partof which participates in the rotation of the pump, .while the outer part is rotatably- "fitted on the inner part and may remain stationary together with the flexible tube attached to it.

In the accompanyin drawing the resent invention is exemp ified'in severe em-' bodiments. I 3

Fig. 1 is an outboard motor witha reversing tiller utilizing the torque of thepropeller casing and a water-distributor, in side ole vationand'partly insection.

Fig. 2 is top view of the tiller set for driving ahead; 4

Fig. 3 is a top'view of a part of the tiller set for driving astern;

* Fig. 4 is a top view of the tiller set for stopping the boatwhile the motor ,continues to run;

Fig. 5 is a longitudinalsection through, 2% water distributor with eonicaljointing suraces. I I s The tiller 1 carries-at its ring-shaped end the journal 2, in which the propellertuhe sleeve 3 revolves. The latter bears with its collar 4 on the bearing. The propeller tube of the latch 11 is limited by the set-off of the bolt and the nose 16 of thelatch itself.

When the tiller handle'is lowered into a horizontal position Fig. 1) :the bolt 9 enters the path of the teeth 7- or 8 so that the propeller casing must stop. When tooth 7 bears against bolt 9 (Fig. 2) the boat will travel. ahead, 8 bears against bolt 9 (Fig. 3) the boat will ,travel astern. .Whenithe tiller handle is permanently held upwards (Fig. 4) the teeth are clear and the boat will remain stationary, although the motor continues to run.

In order that the pump tube should not participate in the rotation of the propeller tube or the pump, respectively, and, in consequence thereof, wind around the propeller tube, the pain is provided with a water distributor. This distributor, Fig. 5, contains an inner body 18 with conical surfaces 19 and 22 and the cylindrical surface 20. In the middle of the latter is a passage 21, to which the Water of the pump is supplied through pipe 32. On this inner body revolves an outer body, which has ,acylindri- .cal surface 23 and the conicalsurfaces 24 and 25 and, at the top, a bearing surtace 26. In the latter revolves a tube 27 with a flange 28 on which rests a spring 29. This spring presses upwards against the inner fiange is transmitted to the outer body by the body; the pressure of the spring against the tube 27 having at its upper end a'collar 30 secured to it by means of set-screws 31, which collar revolubly rides on thebearing surface 26. The spring will, therefore, keep the conical surfaces pressed against each other and fprm a tight joint for the passage 21 towards outside. To the outer body anipple 37 isfittcd at the part over the passage 21 so that the water from the said'passage may flow off therethrough when the pump operates. The tube 32 has a cone 33 on which revolves a cap nut 34. The latter is screwed over the threaded cone of an elbow tube 35,

which, on its other leg carries a lock nut 36.

For securing thewater distributor on the propeller tube the elbow tube'is unscrewed from the pump, to which tube the flexible bolt 9 and thereby moves thewhen on the other-hand tooth.

34 is unscrewed, turning it to the left, from the new distributor, so that the elbow 35 is detached... This elbow .is'now screwed into the pump in place of the one previously rernove il,-but the lock nut is not yet tight- Instead of the, sliding bolt, a shaft might be disposed in thetiller, terminating at the rear in a bevel gear, which meshes with another. bevel gear fitted't'o the clamping sleeve instead of the clutch teeth. If this shaft has 'tube had been attached, Then the cap nut at its front end a small handwheel, it will be possible to reverse the motor by turning this handwheel, and to steer the boat by rocking it to and fro together with the tiller.

I claim:

1. Steering arrangement for motor-driven boats having a propeller casing revoluble arounda vertical axis, said propeller casing supported by a tube secured in a clamping sleeve. said clamping sleeverevolubly fitted in a bearing of said tiller beneath the planeof the latter. the said clamping sleeve containing two clutch teeth, in said tiller :1 sliding bolt adapted to engage with said teeth or' clear them respectively- 2. Steering arrangement for motor-driven boats having a propeller casing revoluble around a vertical axis, said propeller casing supported by a tube secured in a clam ing sleeve, said clamping sleeve revolubly itted in a bearing of said tiller beneath the plane of the latter, the said clamping sleeve con taining two clutch teeth, in said tiller a sliding bolt adapted to engage withsaid teeth or clear them respectively; hinged to the front end of said sliding bolt a rocking latch, said latch having an extension adapted to receive a tiller handle, said latch adapted to recipro cate said sliding bolt.

3. Steering arrangement boats having a propeller casing revoluble around a vertical axis, said propeller casing supported'by a tune secured in a clamping sleeve, said clamping sleeve revolubly fitted in a bearing of said tiller beneath the plane of thelatter, the said clamping'sleeve containing two clutch teeth, in said tiller a sliding bolt adapted to engage with said teeth or clear them respectively, hinged to the front end of said sliding bolt a rocking latch, said latch having an extension adapted to receive a tiller handle, said latch adapted to reciprocate said sliding bolt and provided with an for motor-driven bolt.

abutment cooperating with a set-ofi of the sliding bolt to limit the stroke of said sliding 4. Steering arrangement for motor-driven boats having a propeller casing revoluble around a vertical axls, said propeller casing supported by a tube secured in a clam ing sleeve, said-clamping sleeve revolubly tits in the tiller, a ump pipe connected to one of two bodies orlmng a water distributor, in one of said bodies a passage communicating with said pump pipe, the second body of the distributor revolving over said first body and having a nipple to which the flexible pump tube is attuched, said nipple communi- 15 eating with said passage.

In testimony whereof I have hereunto signed m name this 16th day of November, 1914, in t e presence of two subscribing witnesses V KARL LENCKi Witnesses:

, HENRY'HASPEBJ,

WOLDEMAR ,Hsr'fr'r. 

